Vehicle-reverse lock



D. MIZRUCHY.

VEHICLE REVERSE LOCK. APPLICATION FILED `APR. I9. |920.

1,399,509',l l v PatentedrDec.-6,1921`.

\ thevehicle; Generallystated the invention vehicles, and particularly traction cars.

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To all 'whom it may concern:

Be it known that l, .DavInh/liznnorrr, a resident ot Pittsburgh, in the` county or Allegheny and State oit Pennsylvania, have invented a new and useful `linprovement in lVehicle-lteverse Locks, ot which the following is a specification. t rlhis inventionrelates tofvehicles.` lltsohdental or undesired backwardmovement of comprises a ratchet plate rotatablewith the* wheel or wheels, and a detentpivoted `to a lined part of the `vehicle 2 and `cooperating with the ratchet plate and arranged to pre# vent rearward rotation oil the ratchet plate and vehicle wheels, together withmeans .tor holding the detent out of operative engagement with 'the ratchetxzplate when desired.

rlhe invention is applicableto any kind ol' vehicle, `either an ordinary wagon, a motor driven road vehicle, and even to railway ln the accompanying drawing the invention is shown applied to an ordinary wagon hut this is tor purpose or illustration merely. ln the drawing Figure l is a side elevation ol' a wagon with one of the rear .wheels removed, showing the invention applied there to; Fig. Q is a plan. view ot a portion ol. the

same showing the body omitted to illustrate the operative mechanism; and Figs. 3 and 4r aredetail views in enlarged section showing respectively a plan and a side view.

In the drawings l indicates the body ot the vehicle, 2 the rear axle`,'3 the front axle, l the rear wheels and 5 the liront wheels, all ot which parts may be oli' any desired kind or construction. ln the case ot a road vehicle the locking means will be applied to the rear wheels and is so shown, but in railway vehicles and the like, the locking means may be applied to any ort the wheels ot the vehicle.` y

As shown there is rigidly attached to each ot the rear wheels a circular ratchet plate 6, and cooperating with each ratchet plate is a detent 7, which is pivoted at 8 to a bracket 9 tiiredto any stationary part or the vehicle, and which detent is held in operative relation to the teeth on the ratchet plate by means of a spring l0, which at one end is attached to a pin 10a projecting from the detcnt Y, and at its opposite end to the rateatea nee.. eu rear.

21.920.` Serial NOQMPZS.

cross bar` 1l, hereina'l'ter referred to.` 'lhe detent and ratchet teeth on the plate are so arranged that when the vehicle travels lorwardly the detent merely clicks over the teeth of the ratchet plate, but so that the detent `absolutely prevents rearward rota-` tion or the ratchet plate and consequently oi w the vehicle wheel or wheels.' `ject it to provide means i'or preventing accii lll/leans is also "provided for moving the de- 4tent out otoperative relation to the ratchet teeth `when it is desired to have the vehicle move backwardly. vlis illustrated,this means t comprises a cross bar or rocking trame ll having upright end portions l2 pivoted upon the pivots 8 `ol the two detente, said member beingfprovided with projecting, fingers 13 lyingijust `beneath'the detente, in such posi.`

tion that when the cross member 1l is rocked on `its pivots these fingersv engage the detente and litt their ends lout ot operative relation with the ratchet plates. il suitable spring is provided tor normally holding the cross `member 1l in such position that the detent will be in operative relation to the ratchet plates. This spring is illustrated as a leaf spring la secured to one or the pivot members 8 and bearing against the cross bar or rocking frame 1l. A. connector, either a bar or wire, cable or the like, l5 extends trom the cross har or rocking trame ll to one end of lever 16, pivoted at l'? and provided with a suitable locking dog 18 engaging a notched segment 19, located at anyconvenient place, and by means ot which the driver or attendant may rock the member l1 to throw the l detents 7 out ot operativerelation with the ratchetplates t5 so `as to permit the vehicle to move backwardlyu rlhe device described can be applied to any :torni ot vehicle. ln the case ot road vehicles it is preferred to have aratchet plate and locking detent in connection with each ot the rear wheelspalthough obviously, it will suffice if such means is provided for only one of the wheels. ln vehicles in which opposite wheels are fastened to a rotatable axle a single ratchet plate and locking detent will surlice` tor both. y

The means described are oi' simple construction and are such as to absolutely lock one or more of the vehicle wheels against rearward rotation, thus preventing the vehicle trom backing down grade when not de sired, and are an ohvious satety means. itt

the same time the locking means can be readily disengaged so as to permit the vehicle to move freely backwardly.

Vv.vehicle wheel, of a engage the ratchet e arranged to engage the detentfand hold it out ofl operative relation to the ratchet plate, and means for rocking said frame.

2. In avehicle, in combination With a vehicle Wheel,V oiV a ratchet plate rotatable with theivvheel, a bracket projecting from a liXed partof the vehicle, a detentpivoted on said bracket and normally biased into engagement with. the plate and arranged to j preventrearward rotation of said plate and vehicle Wheel, a frame pivotally mounted on 4 frame v arranged 'e to tatable '.vvith ,each

the'detent axis, a projecting finger onsaid hold it out of operative relationto the ratchet plate and means for rocking said frame.

na vehicle, in combinationwith oppositefvehiclev Wheels, of a toothed plate roengage the detent andl wheel, a pair of detents mounted on a lixed part of the vehicle and normally biased to engage said toothed plates and prevent rearward rotation of said plates and vehicle Wheels, a transverse rocking frame, when said frame is rocked to engage the detents and hold them out of operative relation to the toothed plates, means biasing said rocking frame to permit the detents to remain in operative relation to the toothed plates, and means for rocking said frame.

4. In a vehicle, in combination with op` posite vehicle wheels, of a toothed plate rotatable with each wheel, brackets attached to a fixed part of the vehicle, a detent pivoted on each bracket and normally biased to engage one of the toothed plates to prevent rearward rotation of the same and the vehicle Wheel, a transverse frame pivoted to said brackets, means carried by said frame and arranged when the frame is rocked to engage the detents and hold them out of operative relation to the toothed plates, and means for rocking said frame.

In testimony whereof, I have hereunto set my hand. v f DAVID MIZRUCHY. s Witnesses: Y G. Gr. TRILL,

HOWARD L. SNIVELY.

means carried thereby and arranged 

